Question: when did headquarters location of that is located at street address is one cnn center
Paraphrase: When did the headquarters moved to 1 CNN Center?
SPARQL (Wikidata): SELECT ?obj WHERE { wd:Q48340 p:P159 ?s . ?s ps:P159 ?obj . ?s pq:P969 ?x filter(contains(?x , 'One CNN Center')) }